Home / 1,451.20-2,176.56-477.20

Finding the Fourth Proportional to 1,451.20, 2,176.56 and 477.20

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Solution

The fourth proportional to 1,451.20, 2,176.56 and 477.20 is: 715.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.20 : 2,176.56 = 477.20 : x
  2. Step 2: Convert to fraction form
    1,451.20/2,176.56 = 477.20/x
  3. Step 3: Cross multiply
    1,451.20x = 2,176.56 × 477.20
  4. Step 4: Simplify right side
    1,451.20x = 1,038,654.43
  5. Step 5: Solve for x
    x = 1,038,654.43/1,451.20
  6. Step 6: Final answer
    x = 715.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.